DE50110632D1 - Axial thrust - Google Patents
Axial thrustInfo
- Publication number
- DE50110632D1 DE50110632D1 DE50110632T DE50110632T DE50110632D1 DE 50110632 D1 DE50110632 D1 DE 50110632D1 DE 50110632 T DE50110632 T DE 50110632T DE 50110632 T DE50110632 T DE 50110632T DE 50110632 D1 DE50110632 D1 DE 50110632D1
- Authority
- DE
- Germany
- Prior art keywords
- ring element
- groove
- front sides
- balance piston
- axial thrust
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/04—Shafts or bearings, or assemblies thereof
- F04D29/041—Axial thrust balancing
- F04D29/0416—Axial thrust balancing balancing pistons
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Sealing Devices (AREA)
- Sealing Using Fluids, Sealing Without Contact, And Removal Of Oil (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
- Actuator (AREA)
Abstract
The invention relates to an axial thrust compensation device consisting of a balance piston rotating by means of a shaft, comprising a groove which is arranged on the outer circumference of the balance piston, and a ring element which is arranged in said groove. The ring element is arranged in a movable manner in the groove, having low end play during the formation of a gap between the axial front sides thereof and the lateral defining walls lying opposite said front sides. The balance piston is guided in an opening pertaining to a housing. The aim of the invention is to improve the efficiency of the axial thrust compensation device and to reduce leakage. In order to achieve this, the ring element (7) is split by a gap (9), and a pressure difference between the axial front sides of the ring element (7) expands the ring element (7) in a flexible manner and positions it in a sealed manner on the inner wall of the opening.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE50110632T DE50110632D1 (en) | 2000-08-03 | 2001-06-22 | Axial thrust |
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE10038586A DE10038586A1 (en) | 2000-08-03 | 2000-08-03 | Axial thrust |
DE50110632T DE50110632D1 (en) | 2000-08-03 | 2001-06-22 | Axial thrust |
PCT/EP2001/007052 WO2002012728A1 (en) | 2000-08-03 | 2001-06-22 | Axial thrust compensation device |
Publications (1)
Publication Number | Publication Date |
---|---|
DE50110632D1 true DE50110632D1 (en) | 2006-09-14 |
Family
ID=7651662
Family Applications (2)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE10038586A Withdrawn DE10038586A1 (en) | 2000-08-03 | 2000-08-03 | Axial thrust |
DE50110632T Expired - Lifetime DE50110632D1 (en) | 2000-08-03 | 2001-06-22 | Axial thrust |
Family Applications Before (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE10038586A Withdrawn DE10038586A1 (en) | 2000-08-03 | 2000-08-03 | Axial thrust |
Country Status (4)
Country | Link |
---|---|
EP (1) | EP1305525B1 (en) |
AT (1) | ATE335134T1 (en) |
DE (2) | DE10038586A1 (en) |
WO (1) | WO2002012728A1 (en) |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE20115516U1 (en) * | 2001-09-20 | 2001-11-29 | Grundfos A/S, Bjerringbro | Centrifugal pump |
DE10248162A1 (en) | 2002-10-16 | 2004-04-29 | Ksb Aktiengesellschaft | Element defining a gap to be placed on a shaft |
JP4352903B2 (en) | 2004-01-15 | 2009-10-28 | 株式会社日立プラントテクノロジー | Single-shaft multistage pump |
Family Cites Families (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2221225A (en) * | 1938-04-16 | 1940-11-12 | Pacific Pump Works | Balancing and leakage device for centrifugal pumps |
US2329990A (en) * | 1942-02-12 | 1943-09-21 | Ingersoll Rand Co | Sealing device |
US3033623A (en) * | 1958-09-02 | 1962-05-08 | John B Thomson | Fluorocarbon sleeve bearing |
US3157444A (en) * | 1962-10-12 | 1964-11-17 | Rockwell Standard Co | Slotted bearing sleeve with lubricant retaining means |
EP0078345A1 (en) * | 1981-10-31 | 1983-05-11 | Bran & Lübbe GmbH | Centrifugal pump with axial thrust compensation driven by an air-gap sleeve motor |
FI940630A (en) * | 1994-02-11 | 1995-08-12 | Ahlstroem Oy | centrifugal |
DE29500744U1 (en) * | 1995-01-18 | 1996-05-15 | Sihi Ind Consult Gmbh | Fluid machine with relief piston |
-
2000
- 2000-08-03 DE DE10038586A patent/DE10038586A1/en not_active Withdrawn
-
2001
- 2001-06-22 EP EP01984492A patent/EP1305525B1/en not_active Expired - Lifetime
- 2001-06-22 DE DE50110632T patent/DE50110632D1/en not_active Expired - Lifetime
- 2001-06-22 AT AT01984492T patent/ATE335134T1/en not_active IP Right Cessation
- 2001-06-22 WO PCT/EP2001/007052 patent/WO2002012728A1/en active IP Right Grant
Also Published As
Publication number | Publication date |
---|---|
DE10038586A1 (en) | 2002-02-14 |
EP1305525A1 (en) | 2003-05-02 |
ATE335134T1 (en) | 2006-08-15 |
EP1305525B1 (en) | 2006-08-02 |
WO2002012728A1 (en) | 2002-02-14 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
8364 | No opposition during term of opposition |